Editing Plosive (section)

===Tenseness===
{{further|Tenseness}}
A '''[[fortis and lenis|fortis]] plosive''' is produced with more muscular tension than a '''[[lenis]] plosive'''. However, this is difficult to measure, and there is usually debate over the actual mechanism of alleged fortis or lenis consonants.

There are a series of plosives in the [[Korean language]], sometimes written with the IPA symbol for ejectives, which are produced using "[[stiff voice]]", meaning there is increased contraction of the glottis than for normal production of voiceless plosives. The indirect evidence for stiff voice is in the following vowels, which have a higher fundamental frequency than those following other plosives. The higher frequency is explained as a result of the glottis being tense. Other such [[phonation]] types include [[breathy voice]], or murmur; [[slack voice]]; and [[creaky voice]].